Finger-ring-casting pattern



DE WITT T. MOATS.

FINGER RING CASTING PATTERN.

APPLICATION FILED DEC.I5, i920.

gimme@ TQM If DE WITT T. MOATS.

y FINGER RING CASTING PATTERN. APPLICATION FILED DEC. I5' I920.1,389,315. Patented Aug. 30, 1921.

2 SHEEIS-SHLET 2.

y I 27170/6775 )Ha-Mai UNITED STATES PATENT OFFICE.

FINGER-RING-CASTING PATTERN.

To @ZZ whom t may concern.'

Be it known that I, DE Wrr'r T. MoATs,.a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new to patterns used in the making of the molds. Y

It is an obj ect of the invention to facilitate the making of the moldsfor various sizes of rings, from the smallest to the largest, and tosave time and work-whereby to increase production at lower cost, and afurther object, in this connection, is the provision of a novel patternfor the top or crown half or portion of the ring which canA be `usedlfor all sizes of rings within practical limits.

Another object is the provision of a flexible or resilient patternmember, composed of rubber or similar material, `which can be used uponmandrels of various sizes for rings of different diameters, with equalfacility and success, thereby Veliminating the necessity for using aspecial top patern memfor each size of ring, and thereby enhancing themaking of molds for the'diff'erent sizes, when a variety of sizes arewanted with the same patern for-the top or crown of the ring, such asrings for high school students, fraternities, clubs and the like.

A still further object is the provision of such a flexible patternmember having a fixed top piece to provide for a uniform blank toppattern impression when using the pattern for different sizes of rings,and also providing means for securing the pattern member to the mandrelin connection with a screw or the like. Y

Still another object is the provision of such a pattern member for useon mandrels of different diameters, used in connection with a halfpattern on a half mandrel for making the lower half of the ringimpression in the mold, wherebythe eleastic pattern member including thepattern or design of the top or crown can be used with the lower halfpatterns for different sizes of rings, instead vof requiring-a specialupper half pattern for each corresponding lower half pattern. i

Specification of Letters Patent.

tion proceeds,

Patented Aug. 30, 1921.

Application led December 15, 1920.r Serial No. 430,895.

The invention also aims to provide such an elastic pattern device whichis extremely simple in construction, but nevertheless thoroughlypractical and eflicient in use.

-With the foregoing and other objects in view, which will be apparentvas the descripthe invention resides in the construction and arrangementof parts hereinafter described and claimed, it being understood thatchanges can'be madewithin the scope of what is claimed without departingfrom the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein z-Figure l is a perspective view of the improved top half pattern.

Fig. 2 is an end view of the smallest size mandrel with the patternthereon, portions being shown in section. i

Fig. 3 is an end view of a larger size mandrel with the pattern thereon.

Fig. 4; is a side elevation of the half mandrel and lower half patternsthereon, showing the corresponding section of the kmold flask thereon,as when forming one half of the mold. y

Fig. 5 is a section on the line 5 5 of Fig. l.

F ig. 6 is a plan `view of said flask section showing the completedhalfof the mold and impression therein.

Fig. 7 is a section on the same plane as in F ig. 5, showing thecomplete flask and the full mandrel therein with the top patternsthereon, showing the completion ofthe mold.

Fig. S is a plan viewv of the second section of the flask showing thetop half impressions in the second half of the mold.

F 9 isa diametrical section of the compiet-ed mold with the coretherein, showing two of the rings cast and the other ring impressions orrecesses ready for pouring.

Fig. 10 is an elevation of the completed ring.

Fig. 1l isa perspective view of the blank top pattern which can befinished according to the contour of top or crown desired, and fromwhich the pattern shown in Fig. l can be made. f l y K Fig. 12 is a topview of the pattern shown in Fig. 11. n Y

Fig. lvis an edge view of such pattern.

The elastic top or crownhalf pattern is shown in Figs. l, 2 and 3, andcomprises an arcuate pattern member 14 ofrubber or similar material,whereby it is kflexible or bendable and intermediate its ends said.member 14 has the top or crown portion 15 cut or shaped to conform tothe desired pattern of top that is wanted, and on the face of the topportion 15 is a piece or plate 16 of sheet metal or other suitable stiffmaterial, which 'is out to the desired contour or pattern, to providethe top pin blank. A screw 17 eX- tends through the top piece 16 whichhas a central aperture, and said screw also extends through the topportion 15 of the member 14, and said piece 16 also serves as a washerfor the screw to assist in clamping the member 14 on the mandrel, ashereinafter described. The member 14 has the terminals 18 which aretapered down to the cross section of the shank or band of the ring andsaid terminals have apertures 19 to assist in clamping them in place.The member 14 is resilient and normally contracts, but it can be openedor spread so as to increase the diameter -wh'ereby said pattern can beplaced on mandrels of different diameters, and although the radius ofthe top portion 15 is changed slightly in placing the member 14 onmandrels of different diameters, the top piece 16 is fixed or rigid soas to maintain the same identical vpattern or design for the top for allsizes of rings. Therefore, although the member 14 is bendable orexpansible to different diameters, the top piece 16 is rigid and definesa. fixed or nonchangeable blank face for the top portion 15.

In Fig. 2 the pattern is shown as embracing a mandrel -20 of smallestsize or diameter, with the terminals 18 abutting. The terminals 18 aresecured in place by ineanas of pins 21 inserted inwardly through theapertures 19 and into apertures 21 in the mandrel 2O with which theapertures 19 ister. The piece 16 and top portion 15 of the pattern areclamped tothe mandrel by screwing the screw 17 into a threaded aperture22 in the mandrel. The pattern is thus' secured on the mandrel andconforms to the diameter of the mandrel.

The same pattern is shown. as applied to a mandrel of larger diameter inFig. 3, for a ring of larger size. In this case the member 14 in beingfitted on the mandrel does not completely encircle same, and theterminals 18 are spread apart, and the pattern is secured to the mandrelby means of pins 21 and the screw 17 the pin holes or apertures 21 ofthe mandrel being suitably positioned. In this way, the pattern can beplaced on mandrels of various diameters, from the smallest to thelargest within practical limits, requiring only a single pattern unitfor the various sizes of rings, and although the diameter of the shankorband is changed,`

'after set forth.

lower half or shank pattern 23 fitted on a i half madrel' 24. As shownin Fig. 4, several of the half or shank patterns 23 are disposed on thehalf mandrel 24, for casting four rings at the same time, although thisis a mere duplication. Flach pattern 23 is of semi-circular form toextend transversely across the curved surface of the mandrel 24, whichis one-half of a cylinder, and the patterns 23 can be of differentsizes, that is, thicknesses and widths, for light, medium and heavyweight rings. It will be understood that for each size full mandrel, acorresponding` half mandrel of equal radius is used so that there is afull mandrel and a half mandrel for each size or diameter of ring. Thepatterns 23 are of suitable metal, and, as

, shown, the intermediate portions thereof are connected in pairs byrunner forming portions 25, and said portions 25 are fastened by screws26 to the mandrel 24, thus securing the patterns 23 on said mandrel.

In carrying out the process of forming the mold and completing thecasting of the rings, the half mandrel 24 is placed flat side down on asurface. as seen in Figs. 4 and 5, and` the flask section 27 isplacedover said mandrel, said section having notches 28 to fit the mandrelwhich projects at its ends from said flask section, as seen in Fig. 4. Aflask for each diameter of ring is used, so that the notches 28 fit thecorresponding half mandrel, and location pins 29 are secured to theflask section 27 and project from the edges of the notches 28 to enter`apertures 30 in the mandrel 24, thereby locating the mandrel and flasksection with respect to one an other. The sand 31 is then poured withintheflask section 27 and rammed or packed tight in tho flask section,thereby completing one-half of the mold, as shown in Fig. 6, the flasksection being inverted' and the mandrel 24 lifted olf of the section 27and out of the sand. This leaves a channel impression 32 for the coreand transverse ring impressions 33 to delinethe lower halves or shanksof the rings, which impressions 33 will be of widths and depthsaccording to the particular patterns 23 used for the correspondingweight of rings wanted. The portions 25 will leave runner channels 34between the impressions and the pouring openings 35 are then formed, asusual, and of funnel shape, as seen in Fig'. 9. y

The otherl half of the mold is then made by placing the correspondingmandrel 20 in the channel impression 32 on the flask section 27, saidYmandrel 2O also having apertures similar to theV apertures 30, toengagethe location pins 29, whereby to properly position the mandrel 20Vand patterns thereon. The terminals 18'of the pattern members 14 willextend and fit within the ringimpressions 33, as seen in Fig. 7 wherebysaid impressions 33 accommodate the terminals of the pattern members 14of any corresponding size of mandrel 20. kThe other flask section 36 isthen placed on the section 27, and has notches 37, corresponding withthe notches 28, to lit the mandrel 20 which projects through saidnotches from the flask. Sleeves or sockets 38 are secured to oppositesid'es of the flask sections to receive location pins 39, whereby theflask sections are made to come together and match properly andaccurately.

The top half of the mandrel 2O and top portions of the patterns thereonproject above the sand 31 of the completed half of the mold, and theother half of the mold is now made by pouring and ramining the sand 40within the flask section 36. The flask section 36 is then lifted 0H ofthe sections 27, or the sections otherwise separated, and the mandrel 20then removed. This leaves in the sand 40 a channel impression 41compleinenting the impression 32 in the sand 31 to receive the core, andtransverse impressions 42 extend across the impression 41 and define thetop' halves of the rings, the top portions 15 and pieces 16 leaving thenegative impressions 43 of the tops or crowns. Then, by bringing the twoflask sections together, assisted by the location pins 39, with a core45 between the mold sections, the mold is prepared for receiving themolten metal. Thus, the core 45 takes the place of the maiidrel 20, andthe impressions 33 and 42 register and define the outlines of the rings,with the flask section 36 at the bottom whereby the top impressions 43are at the bottom and the pouring openings 35 at the top. The moltenmetal is then poured into the openings 35 to flow through the runnerchannels 34'into the impressions, and when the metal cools, it leavesthe rings 46 on the core 45, as seen in Fig. 9, which can be removed`from the sand. These rings 46 have the tops or crowns conforming to thedesign or pattern, and the rings are connected in pairs by the metal 4Sin the channels 34, which is cut 01T from the rings and the rings thenfinished to remove any rough edges. Suitable top pieces 47, which arestruck from dies, can then be soldered or otherwise secured on the top.or crown faces of the rings.

The process is the same when top half patterns are used on mandrels20 ofdifferent diameters, so that it is only necessary to use the lower halfor shank patterns 23 of different sizes for the various sizes of rings,and the top patterns can be readily removed and transferred from onemandrel 20 to another, thereby saving considerable time iii castingrings of different. sizes. Furthermore, with the present arrangement,the top impressions will all be the same for rings of various sizes,inasmuch as the top pieces 16 are unyielding although the members 14smaller size rings, portions of the Shanks areV cut out, the ends of theshanks soldered together or otherwise fastened, and for larger rings,pieces are inserted in the shanks or bands of the medium size rings.With such rings, the shanks or bands have joints which sometimes breakopen, and, furthermore, the cutting out of portions from or theiiisertion or the addition of portions to the medium sizev ringsinvolves considerable work, time and expense, which is eliminated by thepresent invention. Also, in bending the rings according to the presentpractice, for making smaller and larger sizes, the top or crown portionsare bent, and require trimming to make the faces flat. Thus, in bendingthe rings to smaller sizes the faces of the tops are convexed, whereaswhen the rings are bent for larger diameters, the faces are concaved,requiring further work and time to finish the top portions for theattachment of top pieces.

,ln Figs. 11, 12 and 13 a blank top pattern is shown in which the member14 has sufficient stock, especially at the portion 15 so that the rubbercan be cut away to shape the pattern for any particular design, and thetop piece 16 is a disk, which can be cut down or trimmed to theparticular contour, design or pattern wanted. Thus, the member 14 andits top portion 15` and the disk or blank piece 16 can be cut or trimmedto the pattern or design shown in F ig. 1, or to produce any othersuitable design. These blank patterns can be thus supplied for producingthe finished top patterns and of various designs to be used in theproduction of rings of various sizes having the same design for the topor crown portion.

Having thus described the invent-ion, what is claimed as new is 1. Aflexible top half ring pattern.

2. A ring pattern comprising a flexible arcuate member having a topportion with a fixed face and flexible terminals bendable to fit onmandrels of different diameters, with said top portion located betweensaid terminals.

3. A flexible ring pattern having a fixed top portion.

4. A ring pattern comprising a flexible member having a top portion, anda fixed pattern top piece on said portion.

5. A ring pattern comprising an arcuate flexible member having a topportion, and a fixed pattern top piece on said portion,

said top portion being formed to match said piece.

6. A ring pattern comprising a iexible member having a top portion, afixed pattern top niece on said portion, and means for securing saidpiece and member on a mandrel.

7. A ring pattern comprising a flexible arcuate member having a topportion, a ixed pattern top piece on'said portion, said piece andportion being of corresponding design to dene the top of the ring, and a.screw or similarI securing element engageable through said piece andportion for Clamping` them on a mandrel.

8. The combination in a ring pattern out fit, of a half mandrel having alower half ring pattern thereon, a i'ull mandrel corresponding with'said half mandrel, and a top haltl .ring pattern on kthe full mandrel,said top halt ring` pattern being arcuate anl flexible and havinga topportion between its ends, theends of said top pattern being arranged te'extend Within a mold impression made by the lower half pattern.

In testimony whereof(l I have signed my name to this specification inthe presence of two subscribing Witnesses.

DE VITT' T. MOATS.

Witnesses v LAWRENCE J. WELCH, MARY K. DWYER.

